AIM: To observe the efficacy and safety of tazarotene gel in the treatment of plaque type psoriasis and compare with calcipotriol ointment.
目的：观察他扎罗汀凝胶治疗斑块型银屑病的疗效与安全性，并与卡泊三醇软膏比较。
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BACKGROUND: There are several reports on the response rate of patients with vitiligo treated with the combination of PUVA and calcipotriol or calcipotriol alone.